Thanks for your reaction. Everithing is running oke now. But the next problem occurs, The .....thing won't idle it runs perfect only when i use now or then the acc.pump. so it gets fuel. now i'm wondering is it getting no fuel, perhaps the fuelpump is not the right one (120 G/h free flow) or could there be a relation with the timing of the tappets? Just finnished my engine it is a 383 stroker with a edelbrock 1405 (600ccm)on it.